题目内容：

Scarcely ______ asleep when a knock at the door awakened her
A. she had fallen B. she had fallen into
C. had she fallen D. fell she
为什么选C

优质解答

scarcely几乎不,简直不,否定意义的词在句首,句子部分倒装,所以选C.类似的还有：hardly,no sooner,等.如：
Hardly had we got there when it began to rain.
No sooner had they arrived than the meeting started.